Converter-twyer.



F. H. BLANDING.

CONVERTER TWYER.

APPLIOATION PILED APR.24, 1911.

1,035, 772. Patented Aug. 13, 1912.

INVENTCJR- CEZ a; JM'M %&

AT'T'CIR NEY- UNITED STATES PATENT OFFICE.

FORREST I-I. BLNDING, OF CHICAGO, ILLINOIS, ASSIGNOR TO ALLIS-CHALMERS COMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF NEW JERSEY.

CONVERTER-TWYER.

To all whom it may camera:

Be it known that I, Fonnns'r H. BLArID- ING, a citizen of the United States, residng at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in ConVerter-Twyers, of which the following is a specification.

This invention relates to improvements in the Construction of twyers for injecting air blasts into smelting furnaces and is especially applieable in copper converters.

The object of the invention is to provide a twyer or air injection pipe for copper converters which is simple in Construction, ellicient in operation, and easily repaired or replaced.

A clear conception of one embodiment of the invention can be obtained by referring to the accompanying drawing in which like reference characters designate the same or similar parts in the various views.

Figure 1 is a central, vertical section through a pipe and wind box of a copper Converter showing these elements applied to a fragment of the Converter shell. Fig. 2 is a transverse, vertical section through the wind box shown in Fig. 1, the section being taken along the line II-II of F ig. l looking in the direction of the arrow.

The copper Converter, of which a fragment of the outer shell 2 is shown, is provided with a suitable lining 1 of non-combustible material. The air supply pipes 4, which extend along the sides of the converter parallel to the axis thereof, are supported by brackets 3 fastened to the shell 2. A series of vertically downwardly projecting pipes 5, having unions 6 therein, connect the pipes 4: with the wind boxes 7 and permit the passage of air from the pipes 4: to the interior of the wind boxes 7. The wind boxes 7 are arranged in series along the sides of the Converter.

The outer end of each box 7 is inclosed by a cover having a poke hole 15 extending therethrough. The poke hole 15 is normally closed by the air pressure within the wind box 7 acting against a sphere lt and pressing said sphere against a seat formed on the poke hole bushing. A recess 13 is formed in the cover and is of such a size as to permit the entrance ofthe sphere 14. The twyer end of the wind box 7 is provided with a sleeve 11 for-med in one therewith and coaxial with the poke hole 15. A plug 16 in- Specification of Letters Patent.

Application filed April 24, 1911.

Patented Aug'. 13, 1912.

Serial No. 623,068.

closes the lower portion of the wind box 7, being renovable therefrom to permit inspection.

The pipe sleeve 12 is firmly fixed to the walls of the wind box sleeve 11. The twyer pipe 10 has screw-thread coaction with the pipe sleeve 12 and passes through the sleeve 11, extending toward the interier of the Converter. The pipe 10 extends into an air injection hole formed in the lining 1 of the converter, but does not pass through the lining. The sleeve ll passes through a stufiing box 9 fastened to the converter shell 2. Suitable packing 8 prevents the back flow of air from the interier of the Converter to the atmosphere.

In casting the wind box, the interier of the sleeve 11 and wind box 7 are cored. The insertion of the pipe sleeve 12 is made by placing -an internally threaded sleeve upon the core before insertion of same within the nold. The metal forming the body of the wind box 7 and sleeve 11 is then oured around the exterior of the core and n contact with the outer surface of the pipe sleeve 12, embedding the sleeve 11 in the 'wall of the wind box sleeve 11. As the casting cools, the pipe sleeve 12 is firmly fixed in position within the body of the wind box. After the core is removed fr'om the interier of the Wind box 7 and sleeve ll, the twyer pipe 10 can be screwed into place without necessitating further matching of the pipe sleeve 12, sleeve 11, or wind box 7.

It may be desirable to form small lugs on the exterior surface of tlie pipe sleeve 12 for the purpose of positively preventing turning of this sleeve within the sleeve 11. Such formation, however, is not essential since the cooling of the cast iron forming the body of the wind box causes same to shrink and firmly fixcs the pipe sleeve 12 in place.

In Operating the Converter, the tilting thereof often causcs Slag to fall into the twyer pipes 10, it being necessary in such cases to force a rod through the poke holes 15 and through the interier of the pipe 10. Through successivo passa es of the red through the pipe 10, this ppe is soon mutilated and must be replaced. Such replacing of the twyer pipe 10 is easily permitted by uncoupling the pipe 5 at the union 6, withdrawing the wind box 7 bodily from the sleeve 9, and unscrewing the twyer pipe 10 from the pipe sleeve 12.

It Will be noted that With this Construction, stutfing boxes at the outer end of the tWyer ppes lO are entirely avoided. The cost of Construction is also greatly reduced, since no nschining` of the members is necessary after casting.

It should be understood that it is not desired to be limited to the exact details of Construction shown and described, for obVious mod ifications Will occur to a person skilled in the art.

It is claimed and desired to secure by Letters Patent,-

l. In a Converter twyer, a Wind box, a sleeve projecting from said Wind box and ocnnectng With the Converter a second sleeve fixed within said first sleeve, and a pipe fixed to said second sleeve, said pipe being removable from said sleeve.

2. In a Converter tWyer, a wind box, a sleeve projectng from said Wind box and connecting With the Converter, a second sleeve embedded in said first sleeve, and a pipe removably attached to said second sleeve.

3. In a Converter tWyer, a Wind box, a sleeve projecting from said Wind box and connecting With the Converter, a second sleeve embedded in said first sleeve, and a pipe removably attached e to said Second sleeve, said pipe passing through said first sleeve.

In testinony Whereof, I affix my signature in the presence of two witnesses.

FORREST H. BLANDING.

VVtnesses JOHN F. WILLIAMS, JAMES P. DUGUID.

copies of this patent may be obtaned for five cents each, by addressng the Commissioner of Patents,

Washington, I). C. 

